3745689 has 4 divisors (see below), whose sum is σ = 4994256. Its totient is φ = 2497124.

The previous prime is 3745663. The next prime is 3745691. The reversal of 3745689 is 9865473.

It is a happy number.

3745689 is nontrivially palindromic in base 11.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 3745689 - 2¹² = 3741593 is a prime.

It is an Ulam number.

It is a D-number.

It is a self number, because there is not a number n which added to its sum of digits gives 3745689.

It is not an unprimeable number, because it can be changed into a prime (3745649) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 624279 + ... + 624284.

It is an arithmetic number, because the mean of its divisors is an integer number (1248564).

Almost surely, 2^3745689 is an apocalyptic number.

It is an amenable number.

3745689 is a deficient number, since it is larger than the sum of its proper divisors (1248567).

3745689 is a wasteful number, since it uses less digits than its factorization.

3745689 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1248566.

The product of its digits is 181440, while the sum is 42.

The square root of 3745689 is about 1935.3782576024. The cubic root of 3745689 is about 155.3020678946.

The spelling of 3745689 in words is "three million, seven hundred forty-five thousand, six hundred eighty-nine".